Which function is equivalent to f(x)=-2(x+7)^2-3

Which of the following is true for the relation f(x)=2x^2+1

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read

Ellie spent $88.79 at the computer stote. she had $44.50 left to buy a cool hat. how much money did she originally have? write and solve an equation to answer the question.